struct iface *
krt_temp_iface(struct krt_proto *p, char *name)
{
struct iface *i;
WALK_LIST(i, p->scan.temp_ifs)
if (!strcmp(i->name, name))
return i;
i = mb_allocz(p->p.pool, sizeof(struct iface));
strcpy(i->name, name);
add_tail(&p->scan.temp_ifs, &i->n);
return i;
}
static void
rte_src_init(void)
{
rte_src_slab = sl_new(rta_pool, sizeof(struct rte_src));
src_id_pos = 0;
src_id_size = SRC_ID_INIT_SIZE;
src_ids = mb_allocz(rta_pool, src_id_size * sizeof(u32));
/* ID 0 is reserved */
src_ids[0] = 1;
src_id_used = 1;
HASH_INIT(src_hash, rta_pool, RSH_INIT_ORDER);
}
/**
* proto_new - create a new protocol instance
* @c: protocol configuration
* @size: size of protocol data structure (each protocol instance is represented by
* a structure starting with generic part [struct &proto] and continued
* with data specific to the protocol)
*
* When a new configuration has been read in, the core code starts
* initializing all the protocol instances configured by calling their
* init() hooks with the corresponding instance configuration. The initialization
* code of the protocol is expected to create a new instance according to the
* configuration by calling this function and then modifying the default settings
* to values wanted by the protocol.
*/
void *
proto_new(struct proto_config *c, unsigned size)
{
struct protocol *pr = c->protocol;
struct proto *p = mb_allocz(proto_pool, size);
p->cf = c;
p->debug = c->debug;
p->mrtdump = c->mrtdump;
p->name = c->name;
p->preference = c->preference;
p->disabled = c->disabled;
p->proto = pr;
p->table = c->table->table;
p->hash_key = random_u32();
c->proto = p;
return p;
}
/**
* proto_add_announce_hook - connect protocol to a routing table
* @p: protocol instance
* @t: routing table to connect to
* @stats: per-table protocol statistics
*
* This function creates a connection between the protocol instance @p
* and the routing table @t, making the protocol hear all changes in
* the table.
*
* The announce hook is linked in the protocol ahook list and, if the
* protocol accepts routes, also in the table ahook list. Announce
* hooks are allocated from the routing table resource pool, they are
* unlinked from the table ahook list after the protocol went down,
* (in proto_schedule_flush()) and they are automatically freed after the
* protocol is flushed (in proto_fell_down()).
*
* Unless you want to listen to multiple routing tables (as the Pipe
* protocol does), you needn't to worry about this function since the
* connection to the protocol's primary routing table is initialized
* automatically by the core code.
*/
struct announce_hook *
proto_add_announce_hook(struct proto *p, struct rtable *t, struct proto_stats *stats)
{
struct announce_hook *h;
DBG("Connecting protocol %s to table %s\n", p->name, t->name);
PD(p, "Connected to table %s", t->name);
h = mb_allocz(rt_table_pool, sizeof(struct announce_hook));
h->table = t;
h->proto = p;
h->stats = stats;
h->next = p->ahooks;
p->ahooks = h;
if (p->rt_notify)
add_tail(&t->hooks, &h->n);
return h;
}
static void
ospf_prepare_dbdes(struct ospf_proto *p, struct ospf_neighbor *n)
{
struct ospf_iface *ifa = n->ifa;
struct ospf_packet *pkt;
uint length;
u16 iface_mtu = (ifa->type == OSPF_IT_VLINK) ? 0 : ifa->iface->mtu;
/* Update DBDES buffer */
if (n->ldd_bsize != ifa->tx_length)
{
mb_free(n->ldd_buffer);
n->ldd_buffer = mb_allocz(n->pool, ifa->tx_length);
n->ldd_bsize = ifa->tx_length;
}
pkt = n->ldd_buffer;
ospf_pkt_fill_hdr(ifa, pkt, DBDES_P);
if (ospf_is_v2(p))
{
struct ospf_dbdes2_packet *ps = (void *) pkt;
ps->iface_mtu = htons(iface_mtu);
ps->options = ifa->oa->options;
ps->imms = 0; /* Will be set later */
ps->ddseq = htonl(n->dds);
length = sizeof(struct ospf_dbdes2_packet);
}
else /* OSPFv3 */
{
struct ospf_dbdes3_packet *ps = (void *) pkt;
ps->options = htonl(ifa->oa->options);
ps->iface_mtu = htons(iface_mtu);
ps->padding = 0;
ps->imms = 0; /* Will be set later */
ps->ddseq = htonl(n->dds);
length = sizeof(struct ospf_dbdes3_packet);
}
/* Prepare DBDES body */
if (!(n->myimms & DBDES_I) && (n->myimms & DBDES_M))
{
struct ospf_lsa_header *lsas;
struct top_hash_entry *en;
uint i = 0, lsa_max;
ospf_dbdes_body(p, pkt, &lsas, &lsa_max);
en = (void *) s_get(&(n->dbsi));
while (i < lsa_max)
{
if (!SNODE_VALID(en))
{
n->myimms &= ~DBDES_M; /* Unset More bit */
break;
}
if ((en->lsa.age < LSA_MAXAGE) &&
lsa_flooding_allowed(en->lsa_type, en->domain, ifa))
{
lsa_hton_hdr(&(en->lsa), lsas + i);
i++;
}
en = SNODE_NEXT(en);
}
s_put(&(n->dbsi), SNODE en);
length += i * sizeof(struct ospf_lsa_header);
}
if (ospf_is_v2(p))
((struct ospf_dbdes2_packet *) pkt)->imms = n->myimms;
else
((struct ospf_dbdes3_packet *) pkt)->imms = n->myimms;
pkt->length = htons(length);
}
